Read this paragraph excerpted from Surgical Anatomy by Joseph Maclise.
Anatomy--the [Greek word], the knowledge based on principle--is the foundation of the curative art, cultivated as a science in all its branchings; and comparison is the nurse of reason, which we are fain to make our guide in bringing the practical to bear productively. The human body, in a state of health, is the standard whereunto we compare the same body in a state of disease. The knowledge of the latter can only exist by the knowledge of the former, and by the comparison of both.
Which of these is the most accurate summary based on key words in this paragraph?
Understanding anatomy requires a comparison of reason and knowledge.
Medical science is based on the comparison between a healthy and an unhealthy human body.
The human body cannot be understood fully without a cultivated knowledge of medical science.
Medicine is not a practical science but it can benefit from a practical study of anatomy.